To install the expertsystem in Google Colab, uncomment the following:
# !pip install expertsystem[doc]
The expertsystem consists of three main components: particle, reaction, and amplitude that build on each other. Here's a small example of how to use them!
import expertsystem as es
pdg = es.io.load_pdg()
pdg.filter(lambda p: p.spin == 2 and p.charmness).names
result = es.reaction.generate(
initial_state="J/psi(1S)",
final_state=["K0", "Sigma+", "p~"],
allowed_interaction_types="strong",
)
import graphviz
graphs = result.collapse_graphs()
dot = es.io.convert_to_dot(graphs)
graphviz.Source(dot)
The io module offers functionality for reading and writing. This is useful if when you've generated an AmplitudeModel and want to use it in an external {doc}PWA package <pwa:software>.
amplitude_model = es.amplitude.generate(result)
es.io.write(amplitude_model, "jpsi_to_gamma_eta_eta.yml")
len(amplitude_model.parameters)
Each of the expertsystem's sub-modules offer functionality to handle more advanced reaction types. The following notebooks illustrate how use them.
{toctree}
---
maxdepth: 2
---
usage/workflow
usage/particles
usage/visualization